Dredger



FIG. 1 is a front view of a dredger showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left perspective view thereof;

FIG. 4 is another left perspective view thereof with the boom and front legs raised; and,

FIG. 5 is a right side view thereof.

The bottom view and rear view forms no part of the claimed design.

The portions of the dredger that are shown in broken lines in the drawings are for illustrative purposes only and do not form part of the claimed design. 

CLAIM The ornamental design for a dredger, as shown and described. 